with the kind help of the Sat Guru one should enquire 'Who am I?'

69. By the persistent and continued bhavana of ‘I am
the Brahman-Self’ all thoughts and feelings of differentiation
of Self and non-Self will drop off and permanent abidance in
Brahman-Self will be achieved. This bhavana is possible only
for those with a keen inquiring mind intent on knowing the
Self and not for those who are indifferent about Self-knowledge.
(Ch.32, v.18)

70. Ignorance and indifference in regard to the enquiry
of the truth about one-self is the store house of nescience and
trouble, blocking the view of the Self, and creating in a split
second all sorts of illusions and harassment of mental worry.
Non-enquiry renders bhavana impossible. (Ch.32, v.19)

71. In short, non-enquiry will steep one for ever in the
ocean of samsara (earthly suffering). There is no greater enemy
for one than non-enquiry. Therefore, this habit must be
overcome in order to fix the mind in the bhavana which leads
to abidance in the Self. (Ch.32, v.20)

72. Enquiry should be made this wise: With the kind help
of the Sat Guru one should enquire ‘Who am I? what is this
world? what is the reality behind all these?’ (Ch.32, v.21)

~ The Essence of Ribhu Gita, Translation By Prof. N. R. Krishnamoorthi Aiyer